Method and system for calculating provincial power carbon emission factor considering green power, storage medium and equipment

Abstract

The invention discloses a provincial power carbon emission factor calculation method and system considering green electricity, a storage medium and equipment, and the method specifically comprises the steps: obtaining the total amount of power generation carbon emission of a whole province at a provincial level, and calculating the indirect carbon emission of power calling-in / calling-out of the provincial level; adding the total power generation carbon emission amount of the whole province and the indirect carbon emission amount called in / out by the power of the province as the total power carbon emission amount; obtaining the total power generation amount of the whole province of the provincial level, adding the net power amount for power interaction with the main body, and deducting the total non-fossil energy power generation amount of the whole province, the power amount corresponding to the total purchased net green certificate amount, the purchased nuclear power power amount and the power amount of other non-fossil energy in sequence to serve as the total power amount; and obtaining a provincial power carbon emission factor according to the total power carbon emission amount and the total electric quantity. According to the method, the actual value is adopted for calculation, the carbon emission responsibility can be accurately shared, and calculation is more accurate and scientific.

Description

Technical Field

[0001] The present invention relates to a method for calculating provincial electricity carbon emission factors taking green electricity into account, and belongs to the technical field of regional carbon emission accounting. Background Art

[0002] Carbon emission accounting refers to the process of measuring the direct and indirect emissions of carbon dioxide and its equivalent gases to the Earth's biosphere from energy activities, industrial production, etc., including the collection, statistics, and recording of data on emission sources, and the calculation and accumulation of all emission-related data.

[0003] At present, the emission factor method is used to calculate the indirect carbon dioxide emissions from electricity transfer. Although this emission factor method is easy to operate and has high applicability and practicality, the factor uncertainty is large, and the calculation results are subject to errors and lags.

[0004] The emission factor method is specifically divided into the physical indicator emission factor conversion method and the economic indicator conversion method. The physical indicator emission factor conversion method mainly calculates its carbon emissions based on the amount of materials consumed during the activity (such as the coke consumed by the enterprise). The basic calculation formula is: greenhouse gas (GHG) emissions = activity data (AD) × emission factor (EF); the economic indicator conversion method calculates carbon emissions based on relevant economic indicators generated by economic activities (such as sales or operating income). Usually, physical indicator emission factors are more accurate than emissions calculated by economic indicators, but carbon emission factors are affected by technology level, production conditions, energy utilization and process. The same carbon emission factor may have different recommended values ​​in different guidance documents, and more applicable data needs to be selected.

[0005] At present, most of the carbon emission accounting methods in different regions use location-based methods to calculate indirect emissions from purchased electricity. Due to the different temporal and spatial resolutions of the locations (using the national average electricity emission factor\using the regional or provincial average electricity emission factor), some provinces that purchase a large amount of clean energy from other provinces are unable to reflect their actual purchase and use of green electricity, which affects the accuracy of the accounting and cannot meet the need for accurate allocation of carbon emission responsibilities.

[0006] Although some regions have explored adjusting regional electricity emission factors to exclude indirect greenhouse gas emissions from corporate purchases of green electricity, given that the mandatory carbon market has clearly excluded indirect carbon emissions from electricity, and because the connection mechanism between the corporate-level carbon emission accounting system and green electricity has not yet been clarified, the connection between green electricity trading and carbon emission accounting and carbon footprint is still imperfect.

[0007] Therefore, the existing method for calculating the carbon dioxide emission factor for electricity cannot reflect the role of green certificates in the calculation of carbon emission factors, and therefore cannot accurately allocate carbon emission responsibilities, and the calculated carbon emission factor has poor accuracy. Summary of the invention

[0008] The purpose of the present invention is to solve the problems existing in the prior art and to provide a provincial power carbon dioxide emission factor calculation method that takes into account the role of green certificates in the calculation of carbon emission factors.

[0009] In order to achieve the above-mentioned purpose, the technical solution proposed by the present invention is: a method for calculating the provincial electricity carbon emission factor taking into account green electricity, comprising:

[0010] Obtain the consumption of fossil fuels used for power generation in the target province and calculate the total carbon emissions from power generation in the province; obtain the carbon emission factors of power entities that interact with the target province and calculate the indirect carbon emissions from power transfer in / out of the province;

[0011] The total carbon emissions from power generation in the province are added together with the indirect carbon emissions from power transfer in / out of the province as the total carbon emissions from power generation;

[0012] Obtain the total power generation of the target province, the net power exchanged with power entities, the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power; add the total power generation of the province to the net power exchanged with power entities, and then deduct the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn as the total power;

[0013] The provincial electricity carbon emission factor of the target province is obtained based on the total electricity carbon emissions and the total electricity consumption.

[0014] A further design of the above technical solution is as follows: the power entity is an international, regional or provincial power system with independent factors.

[0015] The total carbon emissions from power generation in the province are:

[0016] Em=∑(FC m，p ×NCV m ×EF m / 1000)

[0017] Where, Em is the total carbon emissions from power generation in the province; FC m,p is the consumption of fossil fuel m used for electricity generation; NCV m is the average lower calorific value of fossil fuel m; EF m is the carbon dioxide emission factor of fossil fuel m.

[0018] The CO2 emission factor EF of the fossil fuel m m for:

[0019] EF m =CC m ×OF m ×44 / 12

[0020] In the formula, CC m is the carbon content per unit calorific value of fossil fuel m; OF m is the carbon oxidation rate of fossil fuel m.

[0021] The indirect carbon emissions from electricity transfer in / out are:

[0022]

[0023] Where, EF i is the carbon emission factor of electricity of power entity i that interacts with the target province, E t1i is the net amount of electricity exchanged between the target province and the power subject i, E t3i The total amount of net green certificates purchased from power entity i by the target province corresponds to the amount of electricity, E t4i The target province purchases non-fossil energy electricity from power entity i, and n is the total number of power entities.

[0024] The provincial electricity carbon emission factor of the target province is:

[0025]

[0026] In the formula, E p E is the total power generation of the province; t1 is the net amount of electricity interacting with the subject; E t2 E is the total non-fossil energy power generation in the province; t3 E is the total amount of electricity corresponding to the purchased net green certificates; t4 It is the purchase of nuclear power and other non-fossil energy electricity; the subject is an international, regional or provincial subject with independent factors.

[0027] The measurement of the total amount of net green certificates purchased corresponding to the electricity volume is measured by the inflow and outflow of green certificates.

[0028] A provincial electricity carbon dioxide emission factor calculation system taking green electricity into account, comprising:

[0029] The primary processing module of carbon emissions is used to obtain the consumption of fossil fuels used for power generation in the target province and calculate the total carbon emissions from power generation in the province; obtain the carbon emission factors of the power entities that interact with the target province and calculate the indirect carbon emissions from power transfer in / out of the province;

[0030] The total carbon emission acquisition module is used to add the total carbon emission of power generation in the province and the indirect carbon emission of power transfer in / out of the province as the total carbon emission of power generation;

[0031] The power generation acquisition module is used to add the total power generation of the province to the net power exchanged with the power entities, and then deduct the non-fossil energy power of the province, the power corresponding to the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn as the total power;

[0032] The carbon emission factor calculation module is used to obtain the provincial electricity carbon emission factor based on the total electricity carbon emissions and total electricity consumption.

[0033] A computer-readable storage medium storing one or more programs, wherein the one or more programs include instructions, which, when executed by a computing device, cause the computing device to perform any of the above methods.

[0034] A computing device comprises: one or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any of the above methods.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The present invention deducts all green electricity from all electricity, not limited to coal-fired power and gas-fired power. The deducted green electricity is not the default value but the actual value. It innovatively reflects the role of green certificates in the calculation of carbon emission factors, and can accurately apportion carbon emission responsibilities, thus making the calculated electricity carbon dioxide emission factor more accurate and scientific.

[0037] 2. The present invention measures the green electricity transaction volume across provinces and regions entirely based on the inflow and outflow of green certificates, effectively improving the calculation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The figure is a flow chart of a method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Embodiment 1

[0042] like Figure 1 As shown, the calculation method of the provincial electricity carbon dioxide emission factor taking into account green electricity in this embodiment includes

[0043] Step 1: Obtain the consumption of fossil fuels for power generation in the target province, and calculate the total carbon emissions from power generation in the province at the provincial level; obtain the carbon emission factors of power entities that interact with the target province, and calculate the indirect carbon emissions from power transfer in / out of the province; in this embodiment, the power entity is an international, regional or provincial power system with independent factors.

[0044] Specific: Obtain the total carbon emissions from power generation in the province at the provincial level, including:

[0045] The pure transit electricity will be deducted, and the electricity that is transited but not consumed within the province will not be counted within the province to avoid double counting with other provinces;

[0046] Differentiate the types of provincial outsourced electricity and count the carbon emissions of the electricity corresponding to the green certificate as 0, instead of calculating it according to the average carbon emission factor of the sending province.

[0047] The total carbon emissions from power generation in the province are:

[0048] Em=∑(FC m，p ×NCV m ×EF m / 1000)

[0049] Where, Em is the total carbon emissions from power generation in the province; FC m,p is the consumption of fossil fuel m for electricity generation in province p, in t or m 3 ; NCV m is the average lower calorific value of fossil fuel m, GJ / t or GJ / m 3 EF m is the carbon dioxide emission factor of fossil fuel m, tCO2 / TJ.

[0050] CO2 emission factor EF from fossil fuel m m for:

[0051] EF m =CCm ×OF m ×44 / 12

[0052] In the formula, CC m is the carbon content per unit calorific value of fossil fuel m, tC / TJ; OF m is the carbon oxidation rate of fossil fuel m, %; 44 / 12 is the conversion factor of carbon to carbon dioxide.

[0053] The indirect carbon emissions from electricity import / export are:

[0054]

[0055] Where, EF i is the carbon emission factor of electricity of power entity i that interacts with the target province, which comes from public data released by official governments or international organizations. t1i is the net amount of electricity exchanged between the target province and the power subject i, E t3i The total amount of net green certificates purchased from power entity i by the target province corresponds to the amount of electricity, E t4i The target province purchases nuclear power and other non-fossil energy power from power entity i, where n is the total number of power entities.

[0056] The total amount of net green certificates purchased corresponds to electricity, including: distinguishing the physical electricity volume of green electricity exchange between provinces, determining its sending and receiving provinces, and counting the carbon emissions of green electricity and other non-fossil energy such as nuclear power as 0. The carbon emission deduction rights are enjoyed by the provinces that actually consume green electricity. The inter-provincial green electricity trading volume is measured entirely by the inflow and outflow of green certificates. The green electricity application for intra-provincial transactions is physical electricity (the basis is the electricity trading contract, and the transaction of electricity in the power market is subject to grid congestion verification, and the transaction flow depends on the physical system); in order to effectively distinguish the contribution of green electricity consumption behaviors between provinces to reducing carbon emissions, link the green electricity consumption behaviors of provinces with their provincial carbon emission accounting results, and guide provinces to actively consume green electricity, so as to scientifically and accurately allocate and assess carbon emission indicators within the province.

[0057] This embodiment calculates the corresponding electricity volume of the total net green certificate volume based on actual green certificate transaction data, rather than using the default value given in international or guidelines to determine the corresponding electricity volume of the net green certificate volume. Therefore, it is more accurate and scientific.

[0058] Purchased nuclear power and other non-fossil energy electricity, including: For corporate purchased electricity, refer to the international mainstream carbon emission accounting method, keep consistent with the international standards, start with a location-based approach, and gradually shift to a market-based approach as the electricity market, green certificate market, and carbon market mature. Calculate and allocate carbon emission responsibilities through specific purchase contracts in the energy and electricity market to reflect the carbon emissions that the company is responsible for through its electricity trading decisions.

[0059] Step 2: Add the total carbon emissions from power generation in the province to the indirect carbon emissions from power transfer in / out of the province to obtain the total carbon emissions from power generation;

[0060] Step 3: Obtain the total power generation of the target province, the net power exchanged with power entities, the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power; add the total power generation of the province to the net power exchanged with power entities, and then deduct the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn, as the total power;

[0061] Step 4: Obtain the provincial electricity carbon emission factor of the target province based on the total electricity carbon emissions and total electricity consumption.

[0062] The provincial electricity carbon emission factors for the target provinces are:

[0063]

[0064] In the formula, E p E is the total power generation of the province; t1 is the net amount of electricity interacting with the subject; E t2 E is the total non-fossil energy power generation in the province; t3 E is the total amount of electricity corresponding to the purchased net green certificates; t4 It is the purchase of nuclear power and other non-fossil energy electricity; the subject is an international, regional or provincial subject with independent factors.

[0065] Embodiment 2

[0066] This embodiment designs a provincial electricity carbon dioxide emission factor calculation system taking green electricity into account based on the method of the first embodiment, including:

[0067] The primary processing module of carbon emissions is used to obtain the consumption of fossil fuels used for power generation in the target province and calculate the total carbon emissions from power generation in the province; obtain the carbon emission factors of the power entities that interact with the target province and calculate the indirect carbon emissions from power transfer in / out of the province;

[0068] A module for obtaining the total carbon emissions, which is used to add the total carbon emissions from power generation in the province and the indirect carbon emissions from power transfer in / out of the province as the total carbon emissions from power generation;

[0069] The power generation acquisition module is used to add the total power generation of the province to the net power exchanged with the power entities, and then deduct the non-fossil energy power of the province, the power corresponding to the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn as the total power;

[0070] The carbon emission factor calculation module is used to obtain the provincial electricity carbon emission factor based on the total electricity carbon emissions and the total electricity consumption.

[0071] Embodiment 3

[0072] This embodiment provides a computer-readable storage medium storing one or more programs based on the method of Embodiment 1. The one or more programs include instructions. When the instructions are executed by a computing device, the computing device executes any one of the above methods.

[0073] This embodiment also provides a computing device, including: one or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any of the above methods.

[0074] The computing device provided in this embodiment may be a terminal, which may include: a processor, a communications interface, a memory, a display screen, and an input device. Among them, the processor, the communications interface, and the memory communicate with each other through a communication bus. The processor is used to provide computing and control capabilities. The memory includes a non-volatile storage medium and an internal memory, wherein the non-volatile storage medium stores an operating system and a computer program, and the computer program is executed by the processor to implement the methods in the above embodiments; the internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a management network, NFC (near field communication) or other technologies. The display screen may be a liquid crystal display screen or an electronic ink display screen, and the input device may be a touch layer covered on the display screen, or a button, a trackball or a touchpad provided on the housing of the computing device, or an external keyboard, touchpad or mouse, etc. The processor may call the logic instructions in the memory.

[0075] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0076] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. A method for calculating provincial electricity carbon emission factors taking green electricity into account, characterized in that: include Obtain the consumption of fossil fuels used for power generation in the target province and calculate the total carbon emissions from power generation in the province; obtain the carbon emission factors of power entities that interact with the target province and calculate the indirect carbon emissions from power transfer in / out of the province; The total carbon emissions from power generation in the province are added together with the indirect carbon emissions from power transfer in / out of the province as the total carbon emissions from power generation; Obtain the total power generation of the target province, the net power exchanged with power entities, the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power; add the total power generation of the province to the net power exchanged with power entities, and then deduct the non-fossil energy power of the province, the corresponding power of the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn as the total power; The provincial electricity carbon emission factor of the target province is obtained based on the total electricity carbon emissions and the total electricity consumption.

2. The provincial electricity carbon emission factor calculation method taking green electricity into account according to claim 1 is characterized by: The power entity is an international, regional or provincial power system with independent factors.

3. The provincial electricity carbon emission factor calculation method taking green electricity into account according to claim 2 is characterized by: The total carbon emissions from power generation in the province are: In=∑(FC m,p ×NCV m ×EF m / 1000) Where, Em is the total carbon emissions from power generation in the province; FC m,p is the consumption of fossil fuel m used for electricity generation; NCV m is the average lower calorific value of fossil fuel m; EF m is the carbon dioxide emission factor of fossil fuel m.

4. The method for calculating provincial electricity carbon emission factors taking into account green electricity according to claim 3 is characterized by: The CO2 emission factor EF of the fossil fuel m m for: EF m =CC m ×OF m ×44 / 12 In the formula, CC m is the carbon content per unit calorific value of fossil fuel m; OF m is the carbon oxidation rate of fossil fuel m.

5. The provincial electricity carbon emission factor calculation method taking green electricity into account according to claim 4 is characterized by: The indirect carbon emissions from electricity transfer in / out are: Where, EF i is the carbon emission factor of electricity of power entity i that interacts with the target province, E t1i is the net amount of electricity exchanged between the target province and power subject i, E t3i The total amount of net green certificates purchased from power entity i by the target province corresponds to the amount of electricity, E t4i The target province purchases non-fossil energy electricity from power entity i, and n is the total number of power entities.

6. The provincial electricity carbon emission factor calculation method taking green electricity into account according to claim 5 is characterized by: The provincial electricity carbon emission factor of the target province is: In the formula, E p E is the total power generation of the province; t1 is the net amount of electricity interacting with the subject; E t2 E is the total non-fossil energy power generation in the province; t3 E is the total amount of electricity corresponding to the purchased net green certificates; t4 It is the purchase of nuclear power and other non-fossil energy electricity; the subject is an international, regional or provincial subject with independent factors.

7. The provincial electricity carbon emission factor calculation method taking green electricity into account according to claim 6 is characterized by: The measurement of the total amount of net green certificates purchased corresponding to the electricity volume is measured by the inflow and outflow of green certificates.

8. A provincial electricity carbon emission factor calculation system taking green electricity into account, characterized in that: include: The carbon emission primary processing module is used to obtain the consumption of fossil fuels used for power generation in the target province and calculate the total carbon emissions from power generation in the province; Obtain the carbon emission factors of the power entities that interact with the target province, and calculate the indirect carbon emissions of power transfer in / out of the province; The total carbon emission acquisition module is used to add the total carbon emission of power generation in the province and the indirect carbon emission of power transfer in / out of the province as the total carbon emission of power generation; The power generation acquisition module is used to add the total power generation of the province to the net power exchanged with the power entities, and then deduct the non-fossil energy power of the province, the power corresponding to the total amount of purchased net green certificates, and the purchased non-fossil energy power in turn as the total power; The carbon emission factor calculation module is used to obtain the provincial electricity carbon emission factor based on the total electricity carbon emissions and total electricity consumption.

9. A computer-readable storage medium storing one or more programs, characterized in that: The one or more programs include instructions, which, when executed by a computing device, cause the computing device to perform any one of the methods of claims 1 to 7.

10. A computing device, characterized in that include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any one of the methods described in claims 1 to 7.

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